A butterfly valve body drilling positioning device

Abstract

The present invention relates to the field of drilling positioning technology, and discloses a butterfly valve body drilling positioning device, comprising a fixed bracket, to which a No. 1 hydraulic mechanism and a workbench are fixedly connected, the bottom of the No. 1 hydraulic mechanism is fixedly connected with a horizontal fixing mechanism, the horizontal fixing mechanism is movably connected with a driving mechanism, the side of the driving mechanism is fixedly connected with a vertical fixing mechanism and a fixed drilling mechanism, a motor and a hydraulic device are arranged inside the driving mechanism, the motor output shaft is fixedly connected to the driving mechanism for controlling the rotation of the driving mechanism, the fixed drilling mechanism is used for drilling the butterfly valve body, the horizontal fixing mechanism realizes rapid positioning in the horizontal direction during drilling, and the vertical fixing mechanism realizes auxiliary positioning in the vertical direction during drilling, thereby ensuring that the butterfly valve is in a horizontal state during drilling, strengthening the fixing effect in the vertical direction, and effectively reducing the cost and installation difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling positioning, in particular to a butterfly valve body drilling positioning device. Background Art

[0002] The lug-type butterfly valve is a common type of butterfly valve, consisting of a valve body, valve stem, valve seat, sealing ring and other components. The valve body is in the shape of a lug and is usually made of metal or plastic. It is used to control the flow of fluid and prevent or allow fluid to pass through the pipeline. It is widely used in industrial fields, building water supply systems, sewage treatment, fire systems, and energy industries. In the manufacture of lug-type butterfly valves, the holes on the valve body are usually precisely manufactured to adapt to specific working pressures and fluid requirements. These holes need to be drilled through a precise drilling process. Through uniform drilling operations, it can be ensured that the fluid can pass through the valve smoothly during the opening and closing process of the butterfly valve. It also helps to reduce friction and resistance during valve operation and extend the service life of the valve.

[0003] Publication No. CN118682511A discloses a butterfly valve body drilling positioning device, comprising a mounting box, wherein an internal positioning mechanism for internal positioning of the butterfly valve body is installed on the inner bottom surface of the mounting box. The present invention realizes the internal positioning of the lug-type butterfly valve body by installing the internal positioning mechanism and utilizing three clamping blocks in the internal positioning mechanism, thereby realizing circumferential primary positioning clamping. By inserting the fixing sleeve through the valve body neck and screwing the fixing sleeve to the nut seat by means of a thread, and then sleeve-mounting the limiting cover on the flange of the valve body neck, radial secondary positioning clamping is realized, thereby improving the stability of the positioning clamping. By installing the lug limiting locking mechanism, the lug is effectively and quickly positioned. The center of the arc-shaped locking plate in the lug limiting locking mechanism is collinear with the center of the drill bit on the electric drill body, which is conducive to quickly and accurately positioning the drill bit and the lug drilling hole.

[0004] The above-mentioned butterfly valve body drilling positioning device is fixed to the butterfly valve neck through a rod-shaped structure, thereby achieving radial fixation. Butterfly valves of different sizes require fixing rods of different diameters, and the fixing rod needs to be tightly fitted with the neck of the butterfly valve during installation to prevent the butterfly valve from shaking during drilling, which greatly increases the cost and installation difficulty in actual use. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a butterfly valve body drilling and positioning device to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a butterfly valve body drilling and positioning device, comprising a fixed bracket, a No. 1 hydraulic mechanism and a workbench fixedly connected to the fixed bracket, a horizontal fixing mechanism fixedly connected to the bottom of the No. 1 hydraulic mechanism, a driving mechanism movably connected to the horizontal fixing mechanism, a vertical fixing mechanism and a fixed drilling mechanism fixedly connected to the side of the driving mechanism, a motor and a hydraulic device are provided inside the driving mechanism, the motor output shaft is fixedly connected to the driving mechanism for controlling the rotation of the driving mechanism, the fixed drilling mechanism is used to drill the butterfly valve body, the horizontal fixing mechanism realizes rapid positioning in the horizontal direction during drilling, and the vertical fixing mechanism realizes auxiliary positioning in the vertical direction during drilling;

[0007] The fixed drilling mechanism includes a No. 2 hydraulic device, a side of which is fixedly connected to a fixed frame, a movable rod is movably connected to the fixed frame, and a limited locking mechanism is fixedly connected to the bottom of the movable rod;

[0008] The vertical fixing mechanism includes a threaded rod, the bottom of the threaded rod is fixedly connected to a connecting seat, the bottom of the connecting seat is movably connected to a slide, a No. 2 spring is fixedly connected between the slide and the No. 2 spring, a connecting rod is fixedly connected to the center of the slide, and the connecting rod is rotatably connected to a roller.

[0009] Furthermore, the horizontal fixing mechanism includes a supporting sleeve, the bottom of the supporting sleeve is fixedly connected to the chassis, the inner wall of the chassis is fixedly connected to a No. 1 spring, the center of the No. 1 spring is fixedly connected to a connecting head, the side of the connecting head is fixedly connected to a fixing plate, the connecting head and the chassis are movably connected, and a cam is rotatably connected to the chassis. The horizontal fixing mechanism drives the cam to rotate through a motor arranged inside the cam, and the outward protruding part of the cam pushes the connecting head outward, and the connecting head drives the fixing plate to move outward to the inner wall of the butterfly valve.

[0010] Furthermore, the top of the threaded rod is rotatably connected to a connecting plate, and the bottom of the other end of the connecting plate is fixedly connected to a metering plate. The metering plate is connected to the driving mechanism through threads, and a scale is set on the metering plate, which can adjust the height through the threaded rod.

[0011] Furthermore, a threaded drive rod is rotatably connected to the fixing frame, a motor is provided inside the threaded drive rod, the motor output shaft is fixedly connected to the threaded drive rod, two guide rods are provided on the side of the threaded drive rod, and the guide rods are fixedly connected to the fixing frame.

[0012] Furthermore, a drill bit is threadedly connected to the threaded drive rod, a driving block is fixedly connected to the side of the drill bit, a fixed block is fixedly connected to the side of the fixing frame, the fixed block is movably connected to the driving mechanism, two limit plates are fixedly connected to the side of the fixing frame, an installation groove is provided on the inner wall of the limit plate, and a dustproof shell is fixedly connected to the bottom of the fixing frame.

[0013] Furthermore, the movable rod includes a top plate, two sliders are fixedly connected to the side surfaces of the top plate, a No. 4 spring is fixedly connected to the inner side surfaces of the sliders, a fixed block is fixedly connected to the side surfaces of the No. 4 spring, the fixed block is fixedly connected to the top plate, a pressure rod is fixedly connected to the bottom of the top plate, a No. 3 spring is fixedly connected to the pressure rod, the bottom of the No. 3 spring is fixedly connected to the fixing frame, the threaded drive rod passes through the fixing frame and is fixedly connected to the limiting locking mechanism at the bottom.

[0014] Furthermore, the limit locking mechanism includes a driving plate, which is fixedly connected to the pressure rod, and the side of the driving plate is rotatably connected to the third connecting rod, and the other side of the third connecting rod is rotatably connected to the second connecting rod, and the side of the second connecting rod is fixedly connected to the gear, and the side of the gear is rotatably connected to the first connecting rod, the first connecting rod is fixedly connected to the top fixing frame, the bottom of the gear is meshed with a splint, and the side of the splint is fixedly connected to a limit block.

[0015] Furthermore, the dustproof housing includes an outer shell plate, to which a center plate is fixedly connected at the inner center of the outer shell plate. Both the outer shell plate and the center plate are provided with connection slots, and the clamping plate slides within the dustproof housing via a limit block. Furthermore, an information adjustment system is installed within the fixed bracket. The information adjustment system includes an information collection unit, an information processing unit, and a control unit. The information collection unit is composed of multiple sensors, including pressure sensors disposed on the outer side of the fixed plate, the outer surface of the roller, and the inner side of the clamping plate, as well as an infrared ranging sensor on the clamping plate. The information processing unit determines the horizontality and verticality of the butterfly valve using data from the pressure sensor and the infrared ranging sensor. The control unit is used to control the coordinated movement of the motor and various hydraulic components.

[0016] Beneficial effects:

[0017] 1. The butterfly valve body drilling and positioning device is equipped with a vertical fixing mechanism. The height of the roller is adjusted according to the size of the butterfly valve before use. When in use, it is driven downward by the driving mechanism, and the slide moves to the inner wall of the butterfly valve. The roller is on the butterfly valve ring. The slide and the No. 2 spring can assist in horizontal fixation. When the driving mechanism rotates, the roller rotates on the butterfly valve, which can ensure that the butterfly valve is in a horizontal state during drilling, thereby enhancing the fixing effect in the vertical direction.

[0018] 2. The butterfly valve body drilling and positioning device is equipped with a movable rod and a limit locking mechanism. Before drilling, the clamping plate moves inward to clamp the lug on the butterfly valve for fixation and positioning. When drilling, the slider is fixed by the No. 3 spring, No. 4 spring and limit plate to prevent the lug from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a butterfly valve body drilling and positioning device proposed by the present invention;

[0020] Figure 2 This is a structural schematic diagram of a butterfly valve body drilling and positioning device proposed by the present invention;

[0021] Figure 3 This is a structural schematic diagram of a butterfly valve body drilling and positioning device proposed by the present invention;

[0022] Figure 4 This is a schematic cross-sectional view of the internal structure of a horizontal fixing mechanism of a butterfly valve body drilling and positioning device proposed by the present invention;

[0023] Figure 5 This is a structural schematic diagram of a fixed drilling mechanism of a butterfly valve body drilling and positioning device proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the movable rod structure of a butterfly valve body drilling positioning device proposed by the present invention;

[0025] Figure 7 This is a schematic structural diagram of a horizontal fixing mechanism of a butterfly valve body drilling and positioning device proposed by the present invention;

[0026] Figure 8 This is a schematic structural diagram of a vertical fixing mechanism of a butterfly valve body drilling and positioning device proposed by the present invention;

[0027] Figure 9 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0028] Figure 10 This is a schematic diagram of the dustproof housing structure of a butterfly valve body drilling and positioning device proposed by the present invention;

[0029] Figure 11 This is a structural diagram of the information adjustment system of a butterfly valve body drilling positioning device proposed by the present invention.

[0030] Among them: 1. Fixed bracket; 2. No. 1 hydraulic mechanism; 3. Drive mechanism; 4. Workbench; 5. Horizontal fixing mechanism; 501. Support sleeve; 502. Chassis; 503. Fixing plate; 504. Connecting head; 505. No. 1 spring; 506. Cam; 6. Vertical fixing mechanism; 601. Threaded rod; 602. Slide plate; 603. Roller; 604. Connecting rod; 605. No. 2 spring; 606. Connecting seat; 607. Measuring plate; 608. Connecting plate; 7. Fixed drilling mechanism; 701. No. 2 hydraulic device; 702. Fixed bracket; 703. Dustproof housing; 7031. Housing plate; 703 2. Center plate; 7033. Connecting groove; 704. Drill bit; 705. Guide rod; 706. Threaded drive rod; 707. Movable rod; 7071. Top plate; 7072. Slider; 7073. Spring No. 3; 7074. Spring No. 4; 7075. Fixed block; 7076. Pressure rod; 708. Limit locking mechanism; 7081. Drive plate; 7082. First connecting rod; 7083. Limit block; 7084. Clamp; 7085. Gear; 7086. Second connecting rod; 7087. Third connecting rod; 709. Mounting groove; 710. Limit plate; 711. Drive block; 712. Fixed block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-4 A butterfly valve body drilling and positioning device includes a fixed bracket 1, to which a hydraulic mechanism No. 1 2 and a workbench 4 are fixedly connected, a horizontal fixing mechanism 5 is fixedly connected to the bottom of the hydraulic mechanism No. 1 2, and a driving mechanism 3 is movably connected to the horizontal fixing mechanism 5. A vertical fixing mechanism 6 and a fixed drilling mechanism 7 are fixedly connected to the side of the driving mechanism 3. A motor and a hydraulic device are arranged inside the driving mechanism 3, and the motor output shaft is fixedly connected to the driving mechanism 3 for controlling the rotation of the driving mechanism 3. The fixed drilling mechanism 7 is used to drill holes in the butterfly valve body. The horizontal fixing mechanism 5 realizes rapid positioning in the horizontal direction during drilling, and the vertical fixing mechanism 6 realizes auxiliary positioning in the vertical direction during drilling.

[0033] The horizontal fixing mechanism 5 includes a supporting sleeve 501, the bottom of the supporting sleeve 501 is fixedly connected to the chassis 502, the inner wall of the chassis 502 is fixedly connected to a spring No. 1 505, the center of the spring No. 1 505 is fixedly connected to a connector 504, the side of the connector 504 is fixedly connected to a fixing plate 503, the connector 504 and the chassis 502 are movably connected, and a cam 506 is rotatably connected to the chassis 502.

[0034] What needs to be specifically explained in this embodiment is that: during use, the horizontal fixing mechanism 5 drives the cam 506 to rotate through the motor set inside the cam 506, and the outward protruding part of the cam 506 pushes the connecting head 504 outward. The connecting head 504 drives the fixing plate 503 to move outward to the inner wall of the butterfly valve and fits together with the inner wall, thereby positioning the butterfly valve in the horizontal direction.

[0035] See also Figures 1-4 、 Figure 8 The vertical fixing mechanism 6 includes a threaded rod 601, the bottom of the threaded rod 601 is fixedly connected to a connecting seat 606, the bottom of the connecting seat 606 is movably connected to a slide 602, a No. 2 spring 605 is fixedly connected between the slide 602 and the No. 2 spring 605, a connecting rod 604 is fixedly connected to the center of the slide 602, and the connecting rod 604 is rotatably connected to the roller 603.

[0036] The top of the threaded rod 601 is rotatably connected to a connecting plate 608, and the bottom of the other end of the connecting plate 608 is fixedly connected to a metering plate 607. The metering plate 607 is connected to the driving mechanism 3 through threads. A scale is set on the metering plate 607, and the height can be adjusted through the threaded rod 601.

[0037] What needs to be specifically explained in this embodiment is: before use, the height of the roller 603 is adjusted according to the size of the butterfly valve, and the threaded rod 601 is rotated to adjust the height. During adjustment, the precise height is determined by the metering plate 607 and it is ensured that each roller 603 is at the same height. During use, it is driven downward by the driving mechanism 3, and the slide plate 602 moves to the inner wall of the butterfly valve. The roller 603 is on the butterfly valve ring. The slide plate 602 and the No. 2 spring 605 can assist in fixing it in the horizontal direction. When preparing to drill a hole, rotate it a few times. During work, the driving mechanism 3 is required to perform "rotation-positioning-drilling". After drilling a hole, continue to the next one. When the driving mechanism 3 rotates, the roller 603 rotates on the butterfly valve, which can ensure that the butterfly valve is in a horizontal state when drilling, thereby enhancing the fixing effect in the vertical direction.

[0038] See also Figure 1-Figure 7 、 Figure 9-10The fixed drilling mechanism 7 includes a No. 2 hydraulic device 701, a fixed frame 702 is fixedly connected to the side of the No. 2 hydraulic device 701, a movable rod 707 is movably connected to the fixed frame 702, and a limited locking mechanism 708 is fixedly connected to the bottom of the movable rod 707.

[0039] A threaded drive rod 706 is rotatably connected to the fixing frame 702, a motor is provided inside the threaded drive rod 706, and the motor output shaft is fixedly connected to the threaded drive rod 706. Two guide rods 705 are provided on the side of the threaded drive rod 706, and the guide rods 705 are fixedly connected to the fixing frame 702.

[0040] A drill bit 704 is threadedly connected to the threaded drive rod 706, a driving block 711 is fixedly connected to the side of the drill bit 704, a fixed block 712 is fixedly connected to the side of the fixing frame 702, the fixed block 712 is movably connected to the driving mechanism 3, two limit plates 710 are fixedly connected to the side of the fixing frame 702, an installation groove 709 is provided on the inner wall of the limit plate 710, and a dustproof shell 703 is fixedly connected to the bottom of the fixing frame 702.

[0041] The movable rod 707 includes a top plate 7071, and two sliders 7072 are fixedly connected to the side of the top plate 7071, and a No. 4 spring 7074 is fixedly connected to the inner side of the slider 7072, and a fixed block 7075 is fixedly connected to the side of the No. 4 spring 7074, and the fixed block 7075 is fixedly connected to the top plate 7071. The bottom of the top plate 7071 is fixedly connected to a pressure rod 7076, and the pressure rod 7076 is fixedly connected to a No. 3 spring 7073. The bottom of the No. 3 spring 7073 is fixedly connected to the fixed frame 702, and the threaded drive rod 706 passes through the fixed frame 702 and is fixedly connected to the limit locking mechanism 708 at the bottom.

[0042] The limiting locking mechanism 708 includes a driving plate 7081, which is fixedly connected to the pressure rod 7076. The side of the driving plate 7081 is rotatably connected to the third connecting rod 7087, and the other side of the third connecting rod 7087 is rotatably connected to the second connecting rod 7086. The side of the second connecting rod 7086 is fixedly connected to the gear 7085, and the side of the gear 7085 is rotatably connected to the first connecting rod 7082. The first connecting rod 7082 is fixedly connected to the top fixing frame 702, and the bottom of the gear 7085 is meshedly connected to the splint 7084, and the side of the splint 7084 is fixedly connected to the limiting block 7083.

[0043] The dustproof housing 703 includes a housing plate 7031, to which a center plate 7032 is fixedly connected at the inner center position. Both the housing plate 7031 and the center plate 7032 are provided with connection grooves 7033, and the splint 7084 slides inside the dustproof housing 703 through the limiting block 7083.

[0044] What needs to be specifically explained in this example is: before drilling, the extension length of the drill bit 704 is adjusted according to the butterfly valve gear, the No. 2 hydraulic device 701 drives the fixed frame 702 to slide outward to determine the drilling position, and when drilling, the motor drives the threaded drive rod 706 to rotate, the threaded drive rod 706 drives the drill bit 704 to move downward, the drill bit 704 drives the drive block 711 to move downward, and the drive block 711 drives the movable rod 707 to move downward during the downward movement, and the No. 4 spring 7074 on the movable rod 707 is initially in a contracted state. When the movable rod 707 moves downward, the pressure rod 7076 drives the drive plate 7081 to move downward, and the drive plate 7081 drives the gear 7085 to rotate after being transmitted by the third connecting rod 7087 and the second connecting rod 7086. When the gear 7085 rotates, it drives the splint 7084 to move inward, and the splint 7084 moves to the When the lock core 711 is in the unlock position, the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core 711 is in the unlock position, and the lock core

[0045] Please refer to 1- Figure 11 An information adjustment system is installed inside the fixed bracket 1, and the information adjustment system includes an information collection unit, an information processing unit and a control unit. The information collection unit is composed of multiple sensors, including pressure sensors arranged on the outside of the fixed plate 503, the outer surface of the roller 603 and the inside of the splint 7084, and an infrared ranging sensor on the splint 7084. The information processing unit determines the horizontality and verticality of the butterfly valve through the data of the pressure sensor and the infrared ranging sensor. The control unit is used to control the coordinated movement of the motor and various hydraulic components, and determines the clamping state in the horizontal direction through the pressure sensor on the outside of the fixed plate 503, determines whether it is vertical through the pressure sensor on the outer surface of the roller 603, and determines the clamping state of the lug through the pressure sensor and the infrared ranging sensor on the splint 7084, so as to fix and position it.

[0046] Please refer to 1- Figure 10 , a positioning method for a butterfly valve body drilling positioning device, specifically:

[0047] 1. Initial positioning: The cam 506 rotates to drive the connector 504 to move outward, and the connector 504 drives the fixing plate 503 to move outward. The fixing plate 503 is supported on the inner wall of the butterfly valve so that the center of the butterfly valve coincides with the center of the drill bit, thus performing the initial positioning of the butterfly valve.

[0048] 2. Secondary positioning: the vertical fixing mechanism 6 is driven downward by the driving mechanism 3, and the slide 602 moves to the inner wall of the butterfly valve. The butterfly valve is reinforced in the horizontal direction by the slide 602 and the second spring 605. At the same time, the roller 603 moves to the valve body of the butterfly valve to fix the butterfly valve in the vertical direction when drilling. At the same time, when the driving mechanism 3 rotates to adjust the position, 603 moves on the butterfly valve to adjust the flatness; three-way positioning: when drilling, the lug is clamped on both sides by the limit locking mechanism 708 so that the drill bit 704 is in the center of the lug, and three-way positioning is performed.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve body drilling positioning device, comprising a fixing bracket (1), characterized in that: The fixed bracket (1) is fixedly connected to a No. 1 hydraulic mechanism (2) and a workbench (4); the bottom of the No. 1 hydraulic mechanism (2) is fixedly connected to a horizontal fixing mechanism (5); the horizontal fixing mechanism (5) is movably connected to a driving mechanism (3); the side of the driving mechanism (3) is fixedly connected to a vertical fixing mechanism (6) and a fixed drilling mechanism (7); a motor and a hydraulic device are provided inside the driving mechanism (3); the motor output shaft is fixedly connected to the driving mechanism (3) and is used to control the rotation of the driving mechanism (3); the fixed drilling mechanism (7) is used to drill a butterfly valve body; the horizontal fixing mechanism (5) realizes rapid positioning in the horizontal direction when drilling, and the vertical fixing mechanism (6) realizes auxiliary positioning in the vertical direction when drilling; The fixed drilling mechanism (7) comprises a second hydraulic device (701), a fixed frame (702) is fixedly connected to the side of the second hydraulic device (701), a movable rod (707) is movably connected to the fixed frame (702), and a limited locking mechanism (708) is fixedly connected to the bottom of the movable rod (707); The vertical fixing mechanism (6) comprises a threaded rod (601), the bottom of the threaded rod (601) is fixedly connected to a connecting seat (606), the bottom of the connecting seat (606) is movably connected to a slide plate (602), a No. 2 spring (605) is fixedly connected between the slide plate (602) and the No. 2 spring (605), a connecting rod (604) is fixedly connected to the center of the slide plate (602), and the connecting rod (604) is rotatably connected to a roller (603).

2. A butterfly valve body drilling and positioning device according to claim 1, characterized in that: The horizontal fixing mechanism (5) comprises a supporting sleeve (501), the bottom of the supporting sleeve (501) is fixedly connected to a chassis (502), a No. 1 spring (505) is fixedly connected to the inner wall of the chassis (502), a connecting head (504) is fixedly connected to the center of the No. 1 spring (505), a fixing plate (503) is fixedly connected to the side of the connecting head (504), the connecting head (504) and the chassis (502) are movably connected, and a cam (506) is rotatably connected to the chassis (502).

3. The butterfly valve body drilling and positioning device according to claim 1, characterized in that: The top of the threaded rod (601) is rotatably connected to a connecting plate (608), and the bottom of the other end of the connecting plate (608) is fixedly connected to a metering plate (607). The metering plate (607) is connected to the driving mechanism (3) via a threaded connection, and a scale is provided on the metering plate (607).

4. A butterfly valve body drilling and positioning device according to claim 2, characterized in that: A threaded drive rod (706) is rotatably connected to the fixing frame (702), a motor is provided inside the threaded drive rod (706), and the motor output shaft is fixedly connected to the threaded drive rod (706), two guide rods (705) are provided on the side of the threaded drive rod (706), and the guide rods (705) are fixedly connected to the fixing frame (702).

5. The butterfly valve body drilling and positioning device according to claim 4, characterized in that: A drill bit (704) is threadedly connected to the threaded drive rod (706), a driving block (711) is fixedly connected to the side of the drill bit (704), a fixing block (712) is fixedly connected to the side of the fixing frame (702), the fixing block (712) is movably connected to the driving mechanism (3), two limiting plates (710) are fixedly connected to the side of the fixing frame (702), an installation groove (709) is provided on the inner wall of the limiting plate (710), and a dustproof shell (703) is fixedly connected to the bottom of the fixing frame (702).

6. A butterfly valve body drilling and positioning device according to claim 5, characterized in that: The movable rod (707) includes a top plate (7071), two sliders (7072) are fixedly connected to the side of the top plate (7071), a No. 4 spring (7074) is fixedly connected to the inner side of the slider (7072), a fixed block (7075) is fixedly connected to the side of the No. 4 spring (7074), the fixed block (7075) is fixedly connected to the top plate (7071), a pressure rod (7076) is fixedly connected to the bottom of the top plate (7071), a No. 3 spring (7073) is fixedly connected to the pressure rod (7076), the bottom of the No. 3 spring (7073) is fixedly connected to the fixing frame (702), and the threaded drive rod (706) passes through the fixing frame (702) and is fixedly connected to the limiting locking mechanism (708) at the bottom.

7. The butterfly valve body drilling and positioning device according to claim 5, characterized in that: The limit locking mechanism (708) comprises a driving plate (7081), the driving plate (7081) is fixedly connected to the pressure rod (7076), the side of the driving plate (7081) is rotatably connected to a third connecting rod (7087), the other side of the third connecting rod (7087) is rotatably connected to a second connecting rod (7086), the side of the second connecting rod (7086) is fixedly connected to a gear (7085), the side of the gear (7085) is rotatably connected to a first connecting rod (7082), the first connecting rod (7082) is fixedly connected to a top fixing frame (702), the bottom of the gear (7085) is meshingly connected to a clamping plate (7084), and the side of the clamping plate (7084) is fixedly connected to a limit block (7083).

8. The butterfly valve body drilling and positioning device according to claim 7, characterized in that: The dustproof housing (703) comprises a housing plate (7031), a center plate (7032) being fixedly connected at the inner center position of the housing plate (7031), and a connecting groove (7033) being provided on both the housing plate (7031) and the center plate (7032), and the clamping plate (7084) slidingly slides inside the dustproof housing (703) via a limiting block (7083).

9. The butterfly valve body drilling and positioning device according to claim 7, characterized in that: An information adjustment system is installed inside the fixed bracket (1), and the information adjustment system includes an information collection unit, an information processing unit and a control unit. The information collection unit is composed of a plurality of sensors, including pressure sensors arranged on the outside of the fixed plate (503), the outer surface of the roller (603) and the inside of the clamping plate (7084), and an infrared distance sensor on the clamping plate (7084). The information processing unit determines the horizontality and verticality of the butterfly valve through data from the pressure sensor and the infrared distance sensor. The control unit is used to control the coordinated movement of the motor and various hydraulic components.

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